Malicious PDF — malware analysis report

Static analysis result for SHA-256 6214de9e76fa5972…

MALICIOUS

PDF

69.0 KB Created: 2020-12-11 10:59:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 99e6482e72a41396cbdcd2107cbcefa9 SHA-1: d5b2cf670b4e898f11fd03e64b4e86053c702e12 SHA-256: 6214de9e76fa59725417d8a5eef9ada2bcfca45e6a202959857235454aa6e973
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://traffking.ru/strik?utm_term=judgment+of+hunefer PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470703/normal_5fa5a6e08b798.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410222/normal_5fd038de4a868.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/3246326d745a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mijumomub/get_band_9_ielts_speaking.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b935dfca-5879-4380-9df5-3c3e6de61a2d/streaming_film_dragon_ball_super_broly.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10ac260f2895dc1e8a19d/t/5fc5933fcb3e0f57710f0a47/1606783809278/amazonbasics_mouse_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1b46055-9ad2-4405-b0c3-6bfaeb5da37d/kujurupuwagelijevisevil.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14892f9866f3fd2d6f995/t/5fc33dad2dd96f5918572bf7/1606630830432/toraduwoxijapuzuned.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/application_letter_format_in_marathi_language.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94fbee6b-6e88-4599-b142-b99fd55bcc61/84304427883.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca8c9e99-2af6-4bab-8f6c-bb0c0c736c87/tipujisatikogevaw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf4ccbc819f1cf49df12d/1606284492940/46103175648.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/fofaviwudademenupuwiva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db9d297e-cbfe-468e-ab8f-a5b56ae45c6c/quantos_ml_de_oleo_vai_na_bengala_da_titan_150.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/ielts_listening_and_reading_answer_sheet.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2AF 4892 bytes
SHA-256: 0d13540d9541c16248bcff74195675d5010fef54ffe54e445507f02caf994a05
font_01_sfnt_off0000e32d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32D 10668 bytes
SHA-256: 99b486fa67b5266107772364f30873d7c7ffd85e29288a30783e89a8b457c03f

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